Yeah, HXH borders on Seinen at times and you'll never expect it when you first begin! It's been one helluva journey.
Since coming back from Hiatus, Togashi has been doing well with the manga. It's mostly world-building/preparation for the new arc, but the chapters are packed with content and it's been a very interesting read so far.
I've got no qualms if they cancel the anime, but judging by it's popularity I think it would be best to put it on hold until there's enough content to start another season.